![]() Noting any and all symptoms can give valuable clues to your veterinarian as to the cause. While the most characteristic symptom of anisocoria is the presence of two different sized pupils in the same dog, there are other symptoms that may occur simultaneously. ![]() If anisocoria suddenly occurs in your dog, seek medical help immediately, as it could be a sign of a serious and progressive condition which could cause your dog’s vision to be permanently affected. Often resulting from a dysfunction of the eyes or neurological system, this condition can be temporary, but may need medical treatment if it persists.Īnisocoria is a symptom, and its presence signals a medical issue. This is because one of the pupils is smaller or larger than the other, and in some cases, both pupils are abnormal, though still differing in size. ![]() While not a life-threatening condition in itself, anisocoria is a symptom that may be indicative of a serious or irreversible condition.Īnisocoria refers to pupil asymmetry, or when the two pupils of the eyes in a dog are different sizes. As a result of many kinds of medical conditions, one or both of the pupils may be subject to persistent constriction or dilation, which causes one or both of the pupils to be an abnormal size. A normal pupil adjusts to allow different kinds of light to enter the eye, becoming smaller in bright light, or constricting, or becoming bigger in response to dim light, or dilated. It is actually an opening that allows light to pass through the eye to the retina. The pupil appears as a round black area in the center of the eye.
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